Cut the zucchini into slices about 3mm thick.
Set up a pan and add 2 tbsp olive oil.
Fry the zucchini slices on both sides over medium heat until they have taken on some colour.
Meanwhile, cook the pasta al dente according to package directions.
When they're done, drain them and save about a ladleful of the pasta water.
Lay out the lightly browned courgettes on a kitchen towel and remove some of the oil. You can season the zucchini slices with a little salt and pepper.
Peel the garlic clove and cut into fine cubes.
Once the zucchini is done, add the garlic to the pan with the remaining oil from the zucchini.
The garlic is now briefly roasted together with the chilli flakes. The garlic should turn slightly brown to get the aroma.
Then the drained noodles and the zucchini slices are added. Mix everything well and first add 2 tablespoons of pasta water.
Let the whole thing boil up briefly, then season with salt, pepper and a little lemon zest. If everything gets too dry, add a little more pasta water and add a little olive oil to taste.